Statewide Rankings

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Please note, Degree Days and Palmer Indices are not available for Alaska. Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.

Iowa

Precipitation Rankings, October 1917

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Wettest/Driest Since	Record
October 1917 1-Month	1.34" (34.04mm)	2.29" (58.17mm)	-0.95" (-24.13mm)	29th Driest	Driest since: 1915	1952
October 1917 1-Month	1.34" (34.04mm)	2.29" (58.17mm)	-0.95" (-24.13mm)	100th Wettest	Wettest since: 1916	2009
Sep–Oct 1917 2-Month	4.21" (106.93mm)	5.96" (151.38mm)	-1.75" (-44.45mm)	30th Driest	Driest since: 1899	1952
Sep–Oct 1917 2-Month	4.21" (106.93mm)	5.96" (151.38mm)	-1.75" (-44.45mm)	99th Wettest	Wettest since: 1916	1941
Aug–Oct 1917 3-Month	6.57" (166.88mm)	9.80" (248.92mm)	-3.23" (-82.04mm)	16th Driest	Driest since: 1899	1953
	6.57" (166.88mm)	9.80" (248.92mm)	-3.23" (-82.04mm)	113th Wettest	Wettest since: 1916	2018
	Ties: 1948
Jul–Oct 1917 4-Month	8.93" (226.82mm)	13.66" (346.96mm)	-4.73" (-120.14mm)	10th Driest	Driest since: 1897	1953, 1976
Jul–Oct 1917 4-Month	8.93" (226.82mm)	13.66" (346.96mm)	-4.73" (-120.14mm)	119th Wettest	Wettest since: 1916	1993
Jun–Oct 1917 5-Month	15.50" (393.70mm)	18.29" (464.57mm)	-2.79" (-70.87mm)	31st Driest	Driest since: 1916	1976
	15.50" (393.70mm)	18.29" (464.57mm)	-2.79" (-70.87mm)	98th Wettest	Wettest since: 1915	1993
	Ties: 1936
May–Oct 1917 6-Month	19.41" (493.01mm)	22.33" (567.18mm)	-2.92" (-74.17mm)	32nd Driest	Driest since: 1916	1976
May–Oct 1917 6-Month	19.41" (493.01mm)	22.33" (567.18mm)	-2.92" (-74.17mm)	97th Wettest	Wettest since: 1915	1993
Apr–Oct 1917 7-Month	23.80" (604.52mm)	25.28" (642.11mm)	-1.48" (-37.59mm)	47th Driest	Driest since: 1916	1988
Apr–Oct 1917 7-Month	23.80" (604.52mm)	25.28" (642.11mm)	-1.48" (-37.59mm)	82nd Wettest	Wettest since: 1915	1993
Mar–Oct 1917 8-Month	25.58" (649.73mm)	27.23" (691.64mm)	-1.65" (-41.91mm)	47th Driest	Driest since: 1916	1988
Mar–Oct 1917 8-Month	25.58" (649.73mm)	27.23" (691.64mm)	-1.65" (-41.91mm)	82nd Wettest	Wettest since: 1915	1993
Feb–Oct 1917 9-Month	25.95" (659.13mm)	28.25" (717.55mm)	-2.30" (-58.42mm)	39th Driest	Driest since: 1916	1988
	25.95" (659.13mm)	28.25" (717.55mm)	-2.30" (-58.42mm)	90th Wettest	Wettest since: 1915	1993
	Ties: 1931
Jan–Oct 1917 10-Month	26.80" (680.72mm)	29.23" (742.44mm)	-2.43" (-61.72mm)	39th Driest	Driest since: 1916	1988
Jan–Oct 1917 10-Month	26.80" (680.72mm)	29.23" (742.44mm)	-2.43" (-61.72mm)	90th Wettest	Wettest since: 1915	1993
Dec 1916–Oct 1917 11-Month	27.82" (706.63mm)	30.33" (770.38mm)	-2.51" (-63.75mm)	37th Driest	Driest since: 1916	1988
Dec 1916–Oct 1917 11-Month	27.82" (706.63mm)	30.33" (770.38mm)	-2.51" (-63.75mm)	91st Wettest	Wettest since: 1915	1993
Nov 1916–Oct 1917 12-Month	29.36" (745.74mm)	32.07" (814.58mm)	-2.71" (-68.84mm)	38th Driest	Driest since: 1916	1956
Nov 1916–Oct 1917 12-Month	29.36" (745.74mm)	32.07" (814.58mm)	-2.71" (-68.84mm)	90th Wettest	Wettest since: 1915	1993
May 1916–Oct 1917 18-Month	48.24" (1,225.30mm)	54.47" (1,383.54mm)	-6.23" (-158.24mm)	19th Driest	Driest since: 1911	1956
May 1916–Oct 1917 18-Month	48.24" (1,225.30mm)	54.47" (1,383.54mm)	-6.23" (-158.24mm)	109th Wettest	Wettest since: 1916	2019
Nov 1915–Oct 1917 24-Month	57.86" (1,469.64mm)	64.23" (1,631.44mm)	-6.37" (-161.80mm)	21st Driest	Driest since: 1911	1956
Nov 1915–Oct 1917 24-Month	57.86" (1,469.64mm)	64.23" (1,631.44mm)	-6.37" (-161.80mm)	106th Wettest	Wettest since: 1916	1993
Nov 1914–Oct 1917 36-Month	95.79" (2,433.07mm)	96.34" (2,447.04mm)	-0.55" (-13.97mm)	56th Driest	Driest since: 1914	1957
Nov 1914–Oct 1917 36-Month	95.79" (2,433.07mm)	96.34" (2,447.04mm)	-0.55" (-13.97mm)	70th Wettest	Wettest since: 1916	2010
Nov 1913–Oct 1917 48-Month	128.07" (3,252.98mm)	128.36" (3,260.34mm)	-0.29" (-7.36mm)	57th Driest	Driest since: 1914	1958
Nov 1913–Oct 1917 48-Month	128.07" (3,252.98mm)	128.36" (3,260.34mm)	-0.29" (-7.36mm)	68th Wettest	Wettest since: 1916	2010
Nov 1912–Oct 1917 60-Month	157.69" (4,005.33mm)	160.34" (4,072.64mm)	-2.65" (-67.31mm)	45th Driest	Driest since: 1914	1956
Nov 1912–Oct 1917 60-Month	157.69" (4,005.33mm)	160.34" (4,072.64mm)	-2.65" (-67.31mm)	79th Wettest	Wettest since: 1916	2010

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published January 2023, retrieved on January 27, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings